Re: cite the dimetion with special characters

Hi Feng,
NCL cannot reduce the variable length in an existing netCDF file by
specifying the "w" option in addfile. You can either use NCL to create a
new netCDF file, or use the netCDF operators (using the ncks utility) to
reduce variables in the file.

See: http://nco.sourceforge.net/nco.html#ncks-netCDF-Kitchen-Sink
Hope that helps..
Adam

On 11/13/2013 11:31 AM, ChenFeng wrote:
>> [1] Not sure why you are using named dimensions when reading
>> in the variable. Howecer, the following may work
>>
>>
>>
>> landusef =
>> fin->LANDUSEF(Time|:,$"z-dimensions0024"$|:,south_north|:,west_east|:)
>>
> Because I want to write the LANDUSEF to a nc file, so I would like use the dimension name.
> And it works well when i follow you method. thanks.
>
>> [2] If you want to decimate the array, try
>>
>> landusef = fin->LANDUSEF(:,:,:,::2)
>> printVarSummary( landusef )
>>
>> Please read the Mini-Language Manual at:
>> http://www.ncl.ucar.edu/Document/Manuals/
>>
> I know we can use "delete(landusef)" to decimate the variable,or use :: to reduce the lenth,
> but what i want to do is to change the data lenth in a nc file. I tried to modify the variable
> in the file by "fnc->landusef=landusef(:,0:50)", it tells me the dimetion is not equal between
> the left side and the right side.
>
>> On 11/13/13 10:24 AM, ChenFeng wrote:
>>> Hi,
>>>
>>>
>>> 1.Is there anybody knows how to cite the dimetion with special characters.
>>> I have an WRF out file, in which there is an variable named LANDUSEF(Time,z-dimensions0024,south_north,west_east).
>>> When I want to read in the variable by "landusef = fin->LANDUSEF(Time|:,z-dimensions0024|:,south_north|:,west_east|:)",
>>> it reports error. And if i use "landusef = fin->LANDUSEF", it goes ok.
>>> 2.the other question is whether ncl can reduce the variable lenth in the nc file.
>>> for example, there is a variable landusef in nc file, which is a 100x100 data. i want to change it to 100x50, and
>>> write back into the file.
>>>
>>> Thanks.
>>>
>>> Feng
>>>
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-- 
______________________________________________________________
Adam Phillips                                asphilli@ucar.edu
NCAR/Climate and Global Dynamics Division       (303) 497-1726
P.O. Box 3000				
Boulder, CO 80307-3000    http://www.cgd.ucar.edu/cas/asphilli
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